Steam-engine



W. J; INNIS. Steam Engine.

No. 230,943. Patented Aug. 10,1880.

N. PETERS. PHD

- cocks.

.AT'ENT r-FIcE.

WILLIAM J. INNIS, OF OIL OITY, PENNSYLVANIA.

STEAM-ENGINE.

SPECIFICATION forming part of Letters Patent No. 230,943, dated August10, 1880.

' Application filed August 20, 1877.

To all whom it may concern:

Be it known that I, WILLIAM J. INNIS, of Oil City, in the county ofVenango and State of Pennsylvania, have invented a new and usefulImprovement in Steam-Engines, which is fully set forth in thisspecification and illustrated in the accompanying drawings.

The object of my invention is to construct the cylinder, steam chest orvalve-chamber, and exhaust'chamber of a steam-engine in a better,stronger, more compact and cheaper manner than has hitherto been done,and to efiect a free discharge of all condensed water from the cylinder.

As now generally constructed the cylinders of steam-engines are firstcast separately, and they must be planed and finished to receive thesteam -chest, which must be likewise finished, as also theexhaust-chamber, and these are then secured together by bolts and nuts.This is not only expensive, but thejoiuts are apt to leak.

To obviate these difficulties I cast the cylinder, the steam-chest orvalve-chamber, and the exhaust-chamber all in one piece, and securingcompactness and strength by having the steam-chest or valve-chamber andthe exhaust-chamber in the base which supports the cylinder. By suitablecores in the cast ing unnecessary weight is avoided and an airjacket isprovided for the sides of the steamchest or valve-chamber.

As cylinders are generally made the con densed water must be got rid ofby special If these are not opened in time damage may result. If leftopen longer than necessary there is a waste of steam and some annoyance.My cylinder clears itselt'of water.

In the drawings, Figure l is a longitudinal section of the casting-takenon the line 1 1 of Fig. 2. Fig. 2 represents a cross-section of thesame, taken on the line 2 2 of Fig. 1. Fig. 3 represents a cross-sectionon the line 3 3 of Fig. 1. Fig. 4 is a perspective view.

A is the steam-cylinder, B the valve-chamber or steam-chest, O theexhaust-chamber, and D the supports or base, and I represents anair-jacket.

On the base D is a flange by which the entire casting is secured to asuitable block.

The live steam enters at E, passes through the annular spaces Gr, aroundthe cylinder to the valve-chamber or steam-chest B, and then alternatelyto the opposite ends of the cylinder, through the ports a b. Theexhaust-steam passes through these ports a b as they are alternatelyopened by the valve, and through the hollow or recessed caps H, downwardinto the exhaust-chamber O, and through it to the atmosphere orcondenser. The condensed water, if any, passes out of the cylinderthrough the same ports. The caps H are bolted to the cylinder in theusual manner, and give free access to the valve and exhaust chambers.

F is an extension of the exhaust-chamber to accommodate a greater lengthof heaterpipes than could be placed in-the chamber O.

I have shown in the drawings a pistonvalve bore, but the ordinary slideor other form of valve may be adopted without departing from theprinciple of my invention.

I claim as my invention 1. The combination of the cylinder A,piston-valve chamber B, and exhaust-chamber 0, arranged substantially asshown, and produced at one operation of casting.

2. The combination of a cylinder A, valvechainber B, and exhaust-chamberO, and ports a b and E, cast and arranged substantially as shown, andfor the purpose set forth.

3. As a new article of manufacture, a cylinder, valve-chamber,exhaust-chamber, airjacket, supports, flanges, and suitable ports in onepiece, constructed and arranged substantially as shown and described.

4. Ahorizontal steam-cylinder, valve-chamber, and exhaust-chamber withthe valvechamber arranged longitudinally and parallel with and below thecylinder, and the exhaust-chamber below the said valve-chamber, and saidsteam-chest and exhaust-chamber surrounded by an air-chamber formed bythe support of said cylinder, substantially as shown and described, andfor the purpose specified.

5. In a casting for a steam-engine, an airjacket formed by thesupporting-base of the cylinder and surrounding the valve-chamber andexhaust-chamber, substantially as shown and described.

6. The. base of a steam-engine cylinder, forming the leg of suchcylinder and inclosing the exhaust-chamber, and so formed that anextension of such exhaust-chamber may be bolted to one end of such base,so as to contain a greater length of heater-pipes than 1o could becontained Without such extension, substantially as shown and described.

WILLIAM J. INNIS. Witnesses E. F. HOWELL, JAMES C. BOYCE.

